Hi,
I enjoyed the photos of Rome the most, as far as composition and overall technical quality goes. The Amsterdam photos had an interesting effect. I like the very old black and while style, though I think the regularity of the streaks (they run a little bit too straight vertical to be real) and the darkness of the shapes actually detracts from the image (perhaps less pure black and more grey). I like the van though, I think that it adds a surrealness to the photos. The old effect, while used a lot in digital, still has promise. It's always interesting to approach a modern subject and make it look old.
I'd have to echo the other posters' comments though that some of the photos are too small. While it's a tough tradeoff between making them too large (and possibly a target to be stolen) it really limits our ability to comment on the photo quality.
Otherwise, nice galleries!
Dimsona
http://www.pbase.com/dimsona